Saw filing device



March 1933- J. A. WALLER 1,900,084

v SAW FILING DEVICE Filed Dec. 24, 1930 5 Sheets-Sheet l 4 INVENTOR. JZZIZJI. Wzlkrg.

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J. A. WALLER SAW FILING DEVICE Mar h 7; 1933.

Filed Dec. 24, 1950 3 Sheets-Sheet 2 INVENTOR.

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March 7. 1933.

J. A. WALLER SAW FILING DEVICE 5 SheetsSheet I5 Filed Dec. 24

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Patented Mar. 7, 1933 "UNITED STATES PATENT oFF c JoHN A. WALLER; orBEVERLY HILLS, CALIFORNIA, ASSIGNOR T WALLER MANU- FACTURINGCORPORATION, LTD, or os ANGELES, CALIFORNIA, A CORPORATION OF NEVADA SAWFILINGFDEVICE Application filed. December 24, 1930. Serial No. 504,466.

This invention relates to means for filing the teeth of saws, and themain objectof the invention is to provide a device for this purposewhich will be effective, convenient and accurate in operation, andsimple in construction. v

A further object of the invention is to provide simple and effectivemeans for performing the necessary adjustments required for operation ofthe device. o The accompanying drawings illustrate embodiments of'myinvention, and referring thereto:

Fig. 1 is a plan view of the device.

Fig. 2 is a section taken on line 2-2 in Fig. 1. I

Fig. 3 is a plan of the control plate for horizontal angular adjustmentof the device.

Fig. 4 is a side elevation of the device. Fig. 5 is an inverted planview taken from the line 5-5 in Fig. 4.

Fig. 6 is'a vertical section Fig. 4.

Fig. 7 is a vertical section on line 7-7 in Fig. 1.

Fig. 8 is a section on line 8-8 in'F g. 1. Fig. 9 is a section on line9--9 in 1g. '7. Fig. 10 is a section on line 1010 in F g.7. Fig. 11 is asection on line 11- 11 in Fig. Fig. 12 is a perspective .view of thepositioning means for engaging with the teeth of the saw to properlyposition the device thereon, said means being shown in invertedposition.

Fig. 13 is a section online 1313 n F1g. 8. Fig. 14 is a section on line14-14 1n Fig. 4.

on line 66 in Fig. 15 is an inverted perspective view of screw 3, saidmember 2 consisting for example nection therebetween. Another screw 3'extends through member 1 and through slots indicated by dotted lines at2 in Figs. 4 and 7 in member 2. Said slots permit a limited pivotalmovement of member 1 on pivot.

screw 3. One of said side portions of the member 2 is bent over the topof the bar 1, as shown at 5, and a screw 6 is screwed through saidportion 5 and engages with the top of the bar 1 to adjust the verticalangular A clamp screw 7 extends through one of the side portions ofmember 2 and screws into the otherof said side portions, so as to clampthe member 2 on bar 1, when so desired.

A handle 8 is provided with a cylindrical shank portion 9 fittingin thesleeve portion 4 of member 2 and provided with a circumferentiallyextending slot 10 engaged by a head 11 on a screw 11 mounted in a tappedopening in the bar 1, so as to hold the handle against endwise movementwhile permitting rotation thereof through a limited vertical angle in aplane transverse to the axis of the handle.

The handle 8 is also provided with file clamping means consistingpreferably of a single lower spring jaw 12 and two upper spring jaws 13,said spring jaws being for example formed as extensions of the shankportion 9 aforesaid, and being suitably temperd'to provide the necessaryresilience. The lower spring jaw 12 extends beyond the upper spring jaws13 and is formed with a V-shaped trough 14 (see Fig. 6) adapted toreceive and handle,'an adjustable file clamp is provided consisting forexample of a U-shaped plate position of member 2 with respect to bar 1.

16 whose side portions embrace the bar 1 and are gripped thereto by aclamp screw 17 extending through a longitudinal slot 18 in the bar 1, soas to provide for longitudinal movement of the clamp means on said bar.The side plates of member 16 are provided with inturned lugs 19 adaptedto engage grooves 18 in bar 1 to guide member 16 on said bar. A fileclamp member 20 is mounted within the bend of the U-shaped member 16 insuch manner as to permit it to turn therein and to have a limitedvertical movement. For this purpose said member 20 may be provided witha transverse notch 22 in its upper face engaged by a pin 23 secured toand extending between the vertical side portions of the U-shaped member16, said pin holding member 20 from longitudinal movement but permittinga limited vertical movement on the bend of member 16 as a fulcrum. Saidmember 20 has a round shank 21 which fits rotatably in an opening 24(see Fig. 10) in a vertical adj usting plate 26 which is provided withside flanges 27 having lug 24 engaging groove 25 in the U-shaped member16, so as to guide the member 26 on member 16, the shoulder of shank 21assisting in such guidance. A screw 28 working in a lug 29 at the upperend of member 26, engages the top of bar 1 to adjust the verticalposition of member 26, a spring 30 being mounted between side portionsof U-shaped member 16 and engaging at its upper end with a flange 113 ona member 110 mounted on bar 1 and at its lower end with the file clampmember 20, so as to tend to hold said file clamp and member 26downwardly. T he file clamp jaw 20 is provided at its outer end with atriangular recess adapted to engage and fit the pointed or smaller endof a three cornered file.

Means are also mounted on the member 16 for engaging the teeth of thesaw to advance the file carrier step by step along the saw, so as tofile successive teeth or successive alternate teeth in sequence. Saidmeans may consist of a rod or finger provided with a spur 34 andpivotally mounted on the member 16 so as to swing horizontally thereonby means of a swivel pin 36 mounted in bearings 37 and 38 in member 16,and carrying a head 39 provided with a bore 40 in which the rod 35 ismounted, said rod being held in positionin said head by pin 42. A crosspin 41 on member 16 engages a groove 43 in swivel pin 36, to hold thelatter in proper vertical position and in contact with bearing 38. Acontrol plate 45 is mounted on guide plate 26 by means of slots 46 inplate 26, in which plate 45 is adapt-ed to slide by lugs 47 extendingfrom said member 45 and slidably engaging the slide flanges 27 aforesaidon member 26, so as to permit vertical movement of. member 45 whilepreventing horizontal movement thereof. Plate 45 has a slot 44 slidablyfitting on bar 1, and is provided at its upper end with an inclinedprojection 48 for a purpose hereinafter explained. Said control plate isprovided at its lower portion with an aperture 49 (see Fig. 10) throughwhich pass the file clamp j aw 20 and the rod 40, the lower face of saidaperture being formed in V-shape or with inwardly and downwardlyinclined cam faces 50 adapted to engage the rod 40 as hereinafterdescribed. Springs 108 are mounted on members 16 and engage with acam109 on rod 40, so as to tend to force the rod 40 toward the other sideof said aperture and thereby hold the spur 39 at the outer end of saidrod in proper position for the feeding operation.

A supporting and guiding means is provided for the file carrier andcomprises a yoke 54 with upturned ends 55 slotted as at 56 to engage andslide on the bar 1, and a sup porting member comprising a horizontalplate 58 on which the member 54 rests, said member 54 being providedwith a central stud 59 extending through said plate 58 and provided witha nut 60 at its lower end adapted to retain the member 54 on the plate58 while permitting relative rotation of said members. A friction spring61 maybe provided on member 54 engaging bar 1. Said members 54 and 58may be held in any desired relative angular position by means of aspring catch 62 mounted on member 54 and formed as a wire bent inlJ-shape having its free end extending through an opening 66 in member54 and adapted to extend into any one of a series of perforations 67 inmember 58, said perforations 67 being arranged in an arc concentric withthe pivotal center of.

member 54. If desired, marks indicated at 69 may be provided on themember 58, said marks reading in connection with one or the other sideof the member 54 to indicate the angular position.

The supporting member 58 is preferably formed with downturned flanges 70having rearwardly extending lugs 71 on which is pivotally mounted byscrews 72 a guide plate 73 which extends under the member 54 and isprovided with a longitudinal slot 74 extending diametrically under thepivotal cen. ter 59 aforesaid, this slot being adapted to embrace thesaw blade and to bring the de vice approximately to aligned positionover such blade. A spring formed, forexample as a bail of spring wire,is attached at its ends to screws 72 aforesaid and extendslongitudinally beneath the guide plate 73 in position to resilientlyengage a suitable support such as a saw clamp for the purposehereinafter set forth. The guide plate ,73 is preferably cut away at itscentral portion as shown at 82, to provide for free operation of thefile.

Positioning means is preferably mounted on the supporting plate 58 toengage with the teeth of the saw so as to definitely position the filecarrier with respect to said teeth. For this purpose I prefer to providea positioning element indicated at 85 andshown sepa-- rately in Fig. 11,said positioning element being :formed for example as a plate 84 adaptedto be secured to the'member 58 and having downturned flanges 87 whichare cor rugated orruffied as shown at 88, the depth and. spacing ofthe'eorrugations corresponding to the set and spacingor pitch of the sawteeth so that when the said positioning element is placed over the sawteeth, the corrugations at the lower edge of said element will fit onand between the respective saw teeth and will correctly position thedevice attached to said element with respect to said teeth.. Theengagement. of the corrugated edgesof member 85 is with the inclinedportions of the teeth intermediate the points and the bottoms of theteeth so as to avoid injury to the points. The lower edges of'the saidcorrugated'portions 88'are preferably beveled as indicated at 90 tocorrespond to the beveled edges of the saw teeth, so as to more closelyfit the same. At the central portion ofthe positioning element thecorrugated members'aforesaid are cut away as shown at 91 in Fig. 11 toprovide space for operation of the file, and the inner portion 92 of theflanges 87 adjacent such out, are bent obliquely outward and forward, asshown. Each flange 87 of the positioning element is provided with anextension 89 having a straight edge, preferably formed as a knife edge89 (see Figs. 8 and 12) adapted to ride between the tips of thereversely set saw teeth, to properly align the device.

In order. to adapt the device for operation of saws of different pitchor tooth spacing, it is desirable to provide a plurality of po sitioningelements having their corrugated portions differently spaced inaccordance I with the different saws to be operated upon,

means being provided for removably and interchangeably mounting the sameon the file carrier support. Said mounting means may comprise a plate 95'slidably mounted below and in contact with the supporting plate 58 by,means of screws 96 extending through slots 97 in plate 58 and screwinginto the plate '95. Lugs 98 are provided on the plate 95 and thehorizontal portion 84of the positioning element is adapted'to beinserted between saidlugs and, the plate 95 and has a rearwardprojection 99 which isbent down at the end thereof to engage back of themember. 58 so as to retain the positioning element in position. 7

It will be understood that by loosening the clamp screws 96, the plate95 may be sepa rated from themember 58 sufficiently to enable theprojection 99 to bedisengaged from the back of member 58, and thepositioning element may then be removed and replaced by anotherpositioning element which is then secured 'in position by tightening theclamp screws 96 so as to hold the projection 99 in engagement with theback of. member 58 Lugs 105 extend upwardly from the plate 26 and areadapted to engage the member 7 3 at the completion of the rearwardstroke of the device, to hold the member 73 down, while the file isbeingraised as hereinafter described.

When the operation of the device is'to' be reversed in filing'alternatesaw teeth, it is necessary to provide for a shift of the positioningelement. For automatically effecting such shift, springs100 and 101 areconnected to. the plate'95 and tothe member 54: as shown in Figs. 1 and;7 the connection of said springs to member 54 being 0E center so thatwhen the bar 1 with attached. parts is swung to one side or the other ofa'plane perpendicular to the axis of the plate 58, the said springswillcause a corresponding shift in theplate 95, the screws'96 being providedwith reduced portions 102 slidably engaging the slots 97 aforesaid inplate'58 and with shoulders 104 below said reduced portions whereby eachscrew may be tightened on the plate while leaving the screw free toslide with respect to supporting member 58.

For use with rip saws a modified form of the positioning means, asshownin Fig; 15 may be used, comprising a corrugated portion 88 adaptedto engage with the teeth that have been filed, and aflat portion 86adapted to ride the teeth in advance of the saw file.

A hand-hold 106 is preferably mounted, for example, by a clamp screw onthe outer end of bar 1 to facilitate manipulation of the device.

The operation of the device is a follows: The saw to be filed is mountedin a suitable support, for example, a clamp such as indicated at 114 inFig. 7, and the device is assumed to be provided with a positioningelement'85 corresponding to the pitch or tooth spacing of the saw. Theclamp screw 17 for member 16 having been loosen-ed, said member 16ismoved outwardly on bar 1 sufficient- 1y to permit insertion of the fileindicated at 115 and the shank of said file indicated at 116 is theninserted between the spring jaws 12 and 13. The shoulder 111 at the baseof the file shank engages the ends of the spring jaws 13 and the baseportion or larger end portion of, the file rests in the V-shaped notchin the lower spring jaw 12. Clamp member 16 is then moved inwardly so asto bring the recess 32 at the end thereof into engagement with thesmaller end of the file. The handle 8 is then turned so as to bring oneface of the file'in-position for filing the forward faces of therespective saw teeth and the adjacent face of the file in position tofile the rearward faces of said teeth. The'recesses 14 and 32 in therespective file clamp means 12 and 20 are so positioned that when thefile is held cat therein, its lower edge will be substantially in a linejoining thecenters of rotation of the handle 8 and a member 20, and inthe vertical plane of the axis of pivot 59. By means of screws 6 and 28,the respective members 2 and 16 may be adjusted so as to bring the loweredge ofthefile approximately parallel to the bar 1. The plate 58 is thenangularly adjusted on the supporting member 1 by the means abovedescribed so as to correspond to the angle at which the teeth are to befiled, and the device is placed over the upper edge of the saw while thelatter is supported in the clamp, the portions of the guide plate 73 ateither side of theslot 7 1 embracing the upperedge portion of the sawand the corrugated lower edge of the positioning element 85 engaging onand between the saw teeth so as to position the supporting means bothlaterally and longitudinally with respect to the saw teeth. The springmeans 80 is adapted to rest on the top of the saw clamp so as to exertan upward pressure on the file carrier, it being understood that in thefiling operation the file carrier is pressed downwardly by the operatorin opposition to this upward pressure so that the force of the filingoperation may be modified as desired and the filing pressure may berelieved if desired on the back stroke.

The parts having been adjusted as above described, the filing operationis effected by moving the device by the handle 8, assisted by pressureon the outer or remote end of the device, such movement consisting ofthe longitudinal reciprocation of the bar 1 and attached parts withrespect to the supporting means 54 thereby causing the two lower facesof the file to engage and file corresponding faces of the saw teeth.When any particular filing operation has been completed, as evidenced bythe lack of resistance to the motion ofthe device, the device is drawnsomewhat farther on its back stroke so as to cause the upper edge of oneof the vertical end portions 55 of member 54 to engage the inclinedprojection 18 on the control plate do so as to raise said plate andcause an inclined face 50 thereof to engage the rod 35, forcing itinwardly so that the spur 34. thereon is brought into position to engagebetween two of the teeth of the saw with the result that in the nextforward stroke of the device the operation of the spring 108 will causethe rod to move relative to the file carrier and thereby cause the filecarrier to advance, say two teeth, along the saw, the device being thenin position for repetition of the operation on such new set of teeth.WVhenthe alternate saw teeth are to be filed,the member 58 is angularlyadjusted by means 62 on the support 54; to a reverse angular position,and the said rod or finger 85 is manually shifted to thevother' side ofthe file clamp 20, and the cam 109 is then rotated on rod to shift itsengagement from one to the other of the springs 108 and to tend to movethe spur 3 1 in a direction to advance the file reversely along the saw.The handle 8 is also turned through a sufficient angle to bring the twolower faces of the file in proper position to file in such reversedirection. The slot 10 in the shank portion of the handle is preferablyformed so as to engage with the screwhead 11 to limit the rotation ofthe file in either direction to the proper angle required for filing inone or the other direction on the saw.

I claim:

1. A saw filing device comprising a file carrier consisting of alongitudinal member and file clamps mounted on said longitudinal memberand adapted to engage and hold the file, guiding means in which saidlongitudinal member is slidably mounted, a member pivotally mounted onone of said clamp members so as to swing transversely to saidlongitudinal member and provided with means for engagingthe teeth of thesaw and with a spring for moving it to effect advance of the filecarrier upon such engagement, and a control member mounted adjacent saidadvance effecting means and provided with inclined faces for moving saidadvance effecting member inwardly against the action of said spring andprovided with an inclined member adapted to be engaged and operated bythe aforesaid guiding'means for the longitudinal member of the filecarrier, to effect the operation of said controlling member at the endof a complete stroke of the longitudinal member on the guiding means.

2. A construction as set forth in claim 1, in which said advanceeffecting member is moved. to either side of the file carrier, and thesaid controlling member therefor is provided with oppositely inclinedfaces for cooperation with said advance effecting mem-' her when ateither side of the file carrier, and

the, operating spring for said advance effecting member is adjustable toeither side of said slot to cause movement of the advance effectingmember away from central position at either side.

3. In a saw filing device, a file carrier, a guide member on which saidcarrier is slidably mounted, a supporting member on whichsaid guidemember is pivotally mounted, and a positioning element mounted on saidsupporting member and provided with corrugated lower edge portionsadapted to engage the teeth of the saw to position the file carriersupport longitudinally and laterally with respect to the saw tooth. V

4. A construction as set forth in claim 3, in which said positioningelement is detachably mounted on the supporting member.

5. A construction as set forth in claim 3, in which the said corrugatededge portions are constructed and adapted to engage the inclinedportions of the saw teeth intermediate the points and the bottoms of theteeth.

6. A construction as set forth in claim 3 and comprising in addition,means for automatically shifting the positioning means on the supportingmember, longitudinally of the saw, When the guiding member for the filecarrier is pivotally shifted in the supporting member.

7. A construction as set forth in claim 3 in which said positioningelement is provided With extensions having straight edges adapted torest on the saw teeth adjacent the tips thereof. v

In testimony whereof I have hereunto subscribed my name this 17th day ofDecember,

JOHN WALLER.

